Good Fish Guide
Cockle
(Cerastoderma edule)
Overview
The common cockle is a bivalve mollusc found buried in mud and sand in estuaries and on beaches. Cockles have distinctive rounded shells that are slightly heart shaped. It is a bivalve (two identical shells) belonging to the family Cardidae meaning heart-shaped. An organ called a siphon allows the animal to feed and breathe whilst buried in the sand. They can jump by bending and straightening the foot - the end bit- which is often coloured red and called the red nosea. The shell size is up to 5cm long, although average sizes tend to be around 3-4cm. Maturity occurs at a shell length of around 2cm. Cockles spawn from March to August, although exact times will vary from region to region.
Ratings
Showing 5 results for Cockle
Best Choice
OK - Needs Improvement
Avoid
Under review
Wild-caught
Location: Certified fleets only
Method: Dredge (suction)
Certification: Marine Stewardship Council (MSC)
More infoEngland (Poole Harbour) - Wild-caught
Location: Certified fleets only
Capture methods: Dredge (suction)
Certification: Marine Stewardship Council (MSC)
For wild cockles in certified fisheries in the Poole estuary there is no concern for biomass and no concern for catch levels. The Poole cockle fishery is compliant with certification by the Marine Stewardship Council (MSC). In this MSC cockle fishery there are a range of management measures that are appropriate for the local stocks. These are guided by regular stock assessments. However, no catch limits are calculated for the stock making it difficult to assess whether catch rates are appropriate for the stock. The cockles in this MSC certified fishery are harvested using pump scoop dredges. Fishing for cockles using dredge methods are likely to cause moderate habitat impacts as they disturb sediments and benthic species. Management measures are in place for these fisheries as they occur in protected environments. Measures include closed areas where the most vulnerable habitats, like salt marsh and seagrass, are found.Rating last updated June 2022
Wild-caught
Location: Certified fleets only
Method: Dredge (suction)
Certification: Marine Stewardship Council (MSC)
More infoEngland (Thames Estuary) - Wild-caught
Location: Certified fleets only
Capture methods: Dredge (suction)
Certification: Marine Stewardship Council (MSC)
For wild cockles in certified fisheries in the Poole estuary there is no concern for biomass and no concern for catch levels. The Poole cockle fishery is compliant with certification by the Marine Stewardship Council (MSC). In this MSC cockle fishery there are a range of management measures that are appropriate for the local stocks. These are guided by regular stock assessments. However, no catch limits are calculated for the stock making it difficult to assess whether catch rates are appropriate for the stock. The cockles in this MSC certified fishery are harvested using pump scoop dredges. Fishing for cockles using dredge methods are likely to cause moderate habitat impacts as they disturb sediments and benthic species. Management measures are in place for these fisheries as they occur in protected environments. Measures include closed areas where the most vulnerable habitats, like salt marsh and seagrass, are found.Rating last updated: June 2022
Wild-caught
Location: Kent & Essex IFCA district (outside the TECFO area)
Method: Dredge (suction)
More infoEngland (Thames Estuary) - Wild-caught
Location: Kent & Essex IFCA district (outside the TECFO area)
Capture methods: Dredge (suction)
This rating is under review.
England (The Wash) - Wild-caught
Location: Eastern IFCA District (0-6nm)
Capture methods: Hand-gathering (shore)
For wild cockles in the Wash there is concern for the biomass but no concern for catch levels. Some management measures are in place but have not been effective at protecting the stock from declining or limiting fishing of small cockles. Cockles in this fishery are predominantly harvested using hand rakes. Fishing for cockles using hand raking may cause some habitat impacts.Rating last updated June 2022.
Wild-caught
Location: Certified fleets only
Method: Hand-gathering (shore)
Certification: Marine Stewardship Council (MSC)
More infoWales (Dee Estuary) - Wild-caught
Location: Certified fleets only
Capture methods: Hand-gathering (shore)
Certification: Marine Stewardship Council (MSC)
For wild cockles in certified fisheries in the Dee estuary there is no concern for the biomass and no concern for catch levels. The Dee cockle fishery is compliant with certification by the Marine Stewardship Council (MSC). In this MSC cockle fishery there are a range of management measures that are appropriate for the local stocks. These are guided by regular stock assessments. The cockles in the Dee MSC certified fishery are harvested using hand rakes which is a low impact fishing method.Rating last updated June 2022.
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Cockle
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